Merlin 140 help.
07-06-2018 | 01:29 PM
#1
Merlin 140 help.
Hi Guys,
Just got back a merlin 140 from service with a new FADEC ECU.
Unfortunately after going through the learn RC and on initial startup the screen first shows STICK IDLE and then for some reason the throttle shows 100% after a few seconds.
If the ECU battery is connected the starter engages and I get the starter overload message.
Did the learn RC a few times with no luck.
I am sure will get a mail from Gasper for the trouble shoot, unfortunately right now at a Jet meet and would like to fly over the weekend so posting here.
Anything else I could try?
Regards Chatty.
Just got back a merlin 140 from service with a new FADEC ECU.
Unfortunately after going through the learn RC and on initial startup the screen first shows STICK IDLE and then for some reason the throttle shows 100% after a few seconds.
If the ECU battery is connected the starter engages and I get the starter overload message.
Did the learn RC a few times with no luck.
I am sure will get a mail from Gasper for the trouble shoot, unfortunately right now at a Jet meet and would like to fly over the weekend so posting here.
Anything else I could try?
Regards Chatty.
07-08-2018 | 07:00 AM
#6
If you have a Hitec servo programmer, you can measure the Rxer's output resolution and even see if it is stable and correct.
Also, the servo programmer's output in Manually Test Servo mode can substitute for the RXer by inputting the desired signals to the ECU. Just measure the Rxer's outputs at the various throttle and trim conditions. Then use just the programmer to input those signal levels. This allows you to totally eliminate rule out any problem with the Txer and Rxer.
The Servo Programmer can also be put on the ECU end of the harness to test the Rxer output and harness.
Also, the servo programmer's output in Manually Test Servo mode can substitute for the RXer by inputting the desired signals to the ECU. Just measure the Rxer's outputs at the various throttle and trim conditions. Then use just the programmer to input those signal levels. This allows you to totally eliminate rule out any problem with the Txer and Rxer.
The Servo Programmer can also be put on the ECU end of the harness to test the Rxer output and harness.
